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The novel platinum(IV) prodrug with self-assembly property and structure-transformable character against triple-negative breast cancer.
Biomaterials ( IF 12.8 ) Pub Date : 2019-12-31 , DOI: 10.1016/j.biomaterials.2019.119751
Conglian Yang 1 , Kun Tu 1 , Hanlu Gao 2 , Liao Zhang 3 , Yu Sun 1 , Ting Yang 1 , Li Kong 1 , Defang Ouyang 2 , Zhiping Zhang 4
Affiliation  

Herein, a small library of Pt(IV) prodrugs based on cisplatin and chemosensitizer adjudin (ADD) were explored for efficient cisplatin resistant triple-negative breast cancer (TNBC) treatment. We further elucidated the detail relationship of chemical structure, alkyl chain length (ethyl to dodecyl) and ADD substituted degree, with respect to the self-assembly ability and cytotoxic effect of prodrugs. It demonstrated that all prodrugs could self-assemble into nanomedicine, which was in consist with the molecule structure building and self-assembly simulation. All nanomedicines possessed small particle size, uniform morphology and ultra-high drug loading content (84.0%-86.5%). Moreover, the length of alkyl chain was of great importance for the structure-transformable character and cytotoxicity of nanomedicines. Interestingly, ADD monosubstituted with butyl or hexyl contralateral substituted prodrug (C4-Pt-ADD or C6-Pt-ADD) assembled nanomedicine could convert to wire or sheet structure. These transformable nanoparticles showed great potential in improving the sensitivity of cisplatin to TNBC with up to 266-fold lower IC50 value and significantly enhanced in vivo tumor growth inhibition. Therefore, the self-assembled nanomedicine based on Pt(IV)-ADD could be a promising strategy for TNBC therapy.

中文翻译:

具有自组装特性和结构可转变特性的新型铂(IV)前药可抵抗三阴性乳腺癌。

在本文中,探索了一个基于顺铂和化学增敏剂adjudin(ADD)的Pt(IV)前药小文库,用于有效的顺铂耐药性三阴性乳腺癌(TNBC)治疗。我们进一步阐明了化学结构,烷基链长(乙基至十二烷基)和ADD取代度之间关于前药的自组装能力和细胞毒性作用的详细关系。结果表明,所有前药都可以自组装成纳米药物,这与分子结构的建立和自组装的模拟相吻合。所有纳米药物均具有小粒径,均一的形态和超高的载药量(84.0%-86.5%)。此外,烷基链的长度对于纳米药物的结构可转化特性和细胞毒性具有重要意义。有趣的是,被丁基或己基对侧取代的前药(C4-Pt-ADD或C6-Pt-ADD)组装的纳米药物单取代的ADD可以转化为线或片状结构。这些可转化的纳米粒子显示出提高顺铂对TNBC敏感性的巨大潜力,其IC50值降低了266倍,并显着增强了体内肿瘤生长抑制作用。因此,基于Pt(IV)-ADD的自组装纳米药物可能是TNBC治疗的有前途的策略。
更新日期:2019-12-31
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